There is one way religion could be used against Iran’s leaders, but it would involve an unlikely scenario: were Iraq-based Grand Ayatollah Ali al-Sistani to issue a fatwa condemning Tehran in any way, it would be a seismic event, probably resulting in the regime’s collapse. Remember, Sistani is Iranian, probably more revered in the entire Shia world than any other ayatollah. His own view is that clerics should not be involved in politics, which is why he has steered clear of any such role in Iraq. But he is unlikely to publicly criticise the Iranian regime. (He did, however, refuse to see Ahmadinejad when the latter visited Iraq in March 2008.)
Nationalism is the most complex of these three forces. Over most of its history, the Iranian regime has exploited nationalist sentiment. Ayatollah Ruhollah Khomeini came to power by battling the shah, who was widely seen as an American puppet. Soon after the revolution, Iraq attacked Iran, and the mullahs wrapped themselves in the flag again. The United States supported Iraq in that war, ignoring Saddam Hussein’s use of chemical weapons against Iranians — something Iranians have never forgotten. Over the past eight years, the Bush administration’s veiled threats to attack Iran allowed the mullahs to drum up support. (Every Iranian dissident, from Akbar Ganji to Shirin Ebadi, has noted that talk of airstrikes on Iran strengthened the regime.) And it is worth remembering that the United States still funds guerrilla outfits and opposition groups that are trying to topple the Islamic Republic. Most of these are tiny groups with no chance of success, funded largely to appease right-wing congressmen. But the Tehran government is able to portray this as an ongoing anti—Iranian campaign.
... contd.